John sjnnamon



(No Model.)

J.- SINNAMON. I Pillow Block.

, Patented April 12,1881.

W/ A/E-55E5:

KW #7 I UNITED STATES PATENT OFFICE.

JOHN SINNAMON, OF QSWEGO, NEW YORK.

Pl LLOW-BLOCK.

SPEGIFICATION fOrming partof Letters Patent No. 240,046, dated April 12-, 1881.

Application filed February 4, 1881. (No model.)

To all whom it may concern.-

Be it known that I, JOHN SINNAMON, of Oswego, Oswego county, New York, have invented an Improvement in Pillow-Blocks, of

which the following'is a specification.

This invention relates to pillow-blocks for the crank-shafts or main driving-wheel shafts of horizontal reciprocating engines. The j ournal-bearin gs of such shafts are subject to great wear at their sides, and liable to. produce lost motion and thumping or pounding of the shaft. To overcome this difficulty various devices have been resorted to, one of the most effective of which is the employment of adjustable wedges applied to the back of the side bearings or followers for the purpose of compensating for the wear of the journal-bearing and taking up the lost motion. It is this latter class of pillow-blocks to which my invention pertains; and it consists in certain peculiar features in the detail construction of the pillow-block and the appliances for compensating for the aforesaid wear, all as hereinafter fully described, and specifically set forth in the claims.

In the accompanying drawings, Figure 1 is a transverse section of my improved pillowblock; Fig. 2, a top view of same, and Fig. 3 a longitudinal section on line a x in Fig. 1;

o Similar letters of reference indicate'eorresponding parts.

P denotes the pillow-block, provided with vertical jaws J, between which and the cap 0 the journal-box is confined. The journal-box 5 is composed of four brasses or anti-friction metal bearings, A A and B B, arranged respectively at the two sides and at the top and bottom of the journal, said bearings having between their adjacent edges a space, '0, which 40 allows them to be moved inward and set up to the journal according to the wear on the bearings, the spaces 0) also forming lubricating-channels, which may be filled with suitable packing for containing the lubricant. The

5 bearings B B'ar'e fitted in collars or recesses 0", respectively in the upper side of the bottom portion of the pillow-block and in the under side of the cap 0. The side bearings A rest on the interior bottom of. the pillow- 5o block, and are held by a downward projection, 01, on the under side of the cap 0 resting on top of the hearing A. The back of the hearing A is outwardly inclined or tapered from the base of the journalbox upward, and between it and the jaw J of the pillow-block is interposed a wedge, w, which is tapered toward the base of the journal-box and arranged movable vertically or at right angles to the axis of the journal-box in an elongated seat,

6, formed partly by a recess in the base of the pillow-block adjacent to the jaws J and partly by the projection 11 on the under side of the cap 0. The pressure of the wedge w against the hearing A moves the latter inward and sets it, with a uniform pressure throughoutits length, up against the journal, according to the wear of said bearing. The said adjustment is accomplished by means of a set-screw a, which has a smooth body passing loosely or freely through the cap G, and engages with its threaded lower extremity a correspondingly-threaded socket, s, in the center of the top of the wedge w, thus holding the said wedge in a suspended position by the head of the screw a resting on top of the cap 0. Two other set-screws, b b, working in threaded holes in the cap 0. and bearing with their lower extremity on the wedge 10, near the ends thereof, serve to hold said wedge in position. By releasing the set-screw a and tightening the set screws 12 the wedge w is forced downward and caused to press the hearing A inward against the journal, as may be required to compensate for the wear of said hearing.

I donot'claim, broadly, the employment of wedges at the back of the side hearings for the purpose of setting up said hearings and compensating for the wear of same, as I am aware the same is not new; but

What I do claim as my improvements is- 0 1. In combination with the pillow-blockjaws J and cap 0, the side bearin gs, A, tapered from the base of the journalbox upward, the wedge 20, arranged movably at right angles to the axis of the journal and tapered toward the 5 base of the journal-box, the suspendingscrew a, having a blank neck through the cap and engaging with its threaded lower extremity, a threaded socket central in the top of the wedge, and the set-screw b 1), working in threaded [00 holes in the cap 0, and bearing with their lower ends on top of the wedge, near the two ends thereof, substantially in the manner deand I), inserted through the cap, all combined scribed and shown. and arranged substantially in the manner de- 2. The combination of the pillow-block P, scribed and shown. 15 provided in the upper side of its bottom part In testimony whereof I have signed my with the recess 1' at the center, and with rename and affixed my seal, in the presence of cessese adjacent to the jaws J, the cap 0, protwo attesting witnesses, at Oswego, in the vided with the centralrecess, r, and downward county of Oswego and State of New York, projections d, the bearings A, held between this 28th day of January, 1881.

said projections and interior bottom of the pil- JOHN SlNNAMON. [L. s.] low-block, the bearings B, seated in the re- Witnesses:

cesses r, the wedges w, interposed between the C. BENDIXON,

bearings A and jaws J, and the set-screws ()0 WM. 0. RAYMOND. 

